He was nearly drowned once.When was ?was in 1998 when he was in middle school.

--- He was nearly drowned once.
--- When was ?
--- was in 1998 when he was in middle school.
A. that; It
B. this; This
C. this; It
D. that; This

(答案→)A. that; ItB. this; ThisC. this; ItD. that; This解析：A[解析]that 用于指代前面提到的事。When was that? 那件事是什么时候发生的？回答When was that时，要用it指代上文提到的事。It was in 1998 when he was in middle school.那是在1998年他在中学时。

这个答案应该是对的